hi this is lab exercise assignment kindly check it out I want this on time and with correct format as mentioned in document and I want my name id and email on file as wellstudent name: AHMER NASIRStudent ID: 6880101Student Email:
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Identify the following network parameters: (i) subnet mask, (ii) router, (iii) domain name server addresses, (iv) IP address lease time, and (v) the IP address offered to the client. 6. What is the purpose of the lease time in DHCP offer messages? 7. Click on the first “DHCP Request” message. Which IP address did the client request? 5.2ARP Clear the “Filter” field, and then type “arp” (without the quotes). 1. Draw a timing diagram showing the exchange of ARP messages. 2. Why does a host need to use ARP? 3. Identify the MAC address corresponding to the IP address 192.168.1.101. Part 2: HTTP/DNS The Internet owes much of its success to the World Wide Web. In this lab, you will observe two protocols that are crucial to the Web; Hypertext Transfer Protocol (HTTP) and Domain Name System (DNS). Using Google or your textbook, describe briefly how the aforementioned protocols work. 5.3HTTP Step 1: Load the file “http-Wireshark-trace-1.cap” (included in the zip file) into Wireshark. Step 2: At this step, you should have the trace file loaded. If you’re unsure, ask the lab demonstrator. You are now ready to answer the following questions. . Type “http” (without the quotes) into the Filter field. 1. Identify the client and server’s IP address. 2. Did the client connect using TCP or UDP? 3. What is the source and destination port? 4. Draw a timing diagram showing the messages transmitted by the client and server. 5. Click on the first GET message. Then in the middle window, expand the label “Hypertext Transfer Protocol”. a. Name the HTML file which the client is trying to get? b. What version of HTTP is the client running? c. Which web browser is the client using? d. Determine the purpose of the following fields: (i) Host, (ii) Accept, (iii) Keep-Alive, and (iv) Connection. 6. Now click on the second message. In the middle window, identify the following: a. What is the version of the web server? b. Is the server running on a Linux or Windows machine? c. What is the length of the content? What does it say? 5.4DNS Step 1: Load the file “dns-Wireshark-trace-1.cap” into Wireshark. Step 2: Type “dns” (wtq) in the Filter field. 1. Identify the source and destination IP address. 2. Are DNS messages sent over UDP or TCP? 3. What is the source and destination port number? 4. In the middle window, click on “Domain Name System”. a. What is the client trying to resolve? 5. Now, click on the second packet. a. How many answers did the server give the client? What are they? b. How long is the client allowed to keep the answer? Step 3: Now, load the file “dns-Wireshark-trace-2.cap” into Wireshark. Step 4: Type “dns” (wtq) in the Filter field. 1. What is the client asking the server to resolve? 2. What did the server answer? 3. Investigate the third message. What is the client trying to resolve? Is the client successful in resolving its query? 4. Lastly, click on the fourth packet. Click on “Authoritative nameservers”. a. Identify the name server. What domain is the name server responsible for?